package com.ly.common.core.controller;

import java.beans.PropertyEditorSupport;
import java.util.Date;
import java.util.List;

import com.ly.common.constant.HttpStatus;
import com.ly.common.core.domain.AjaxResult;
import com.ly.common.core.page.PageDomain;
import com.ly.common.core.page.TableDataInfo;
import com.ly.common.core.page.TableSupport;
import com.ly.common.utils.DateUtils;
import com.ly.common.utils.StringUtils;
import com.ly.common.utils.sql.SqlUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.InitBinder;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;

/**
 * web层通用数据处理
 * @author
 */
public class BaseController {

    protected final Logger logger = LoggerFactory.getLogger ( BaseController.class );

    /**
     * 将前台传递过来的日期格式的字符串，自动转化为Date类型
     */
    @InitBinder
    public void initBinder (WebDataBinder binder) {
        // Date 类型转换
        binder.registerCustomEditor ( Date.class, new PropertyEditorSupport () {
            @Override
            public void setAsText (String text) {
                setValue ( DateUtils.parseDate ( text ) );
            }
        } );
    }

    /**
     * 设置请求分页数据
     */
    protected void startPage () {
        PageDomain pageDomain = TableSupport.buildPageRequest ();
        Integer pageNum = pageDomain.getPageNum ();
        Integer pageSize = pageDomain.getPageSize();
        if ( StringUtils.isNotNull ( pageNum ) && StringUtils.isNotNull ( pageSize ) ) {
            String orderBy = SqlUtil.escapeOrderBySql ( pageDomain.getOrderBy () );
            PageHelper.startPage ( pageNum, pageSize, orderBy );
        }
    }

    /**
     * 响应请求分页数据
     */
    @SuppressWarnings ( {"rawtypes", "unchecked"})
    protected TableDataInfo getDataTable (List<?> list) {
        TableDataInfo rspData = new TableDataInfo ();
        rspData.setCode ( HttpStatus.SUCCESS );
        rspData.setMsg ( "查询成功" );
        rspData.setRows ( list );
        rspData.setTotal ( new PageInfo ( list ).getTotal () );
        return rspData;
    }

    /**
     * 响应返回结果
     * @param rows 影响行数
     * @return 操作结果
     */
    protected AjaxResult toAjax (int rows) {
        return rows > 0 ? AjaxResult.success () : AjaxResult.error ();
    }

    /**
     * 页面跳转
     */
    public String redirect (String url) {
        return StringUtils.format ( "redirect:{}", url );
    }
}
